1.7" Sawfish Fossil Tooth Barb Onchopristis Numidus Cretaceous Dinosaur Era COA
Location: Oued Zem, Morocco
Weight: 0.2 Ounces
Dimensions: 1.7 Inches Long, 0.6 Inches Wide, 0.4 Inches Thick
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Cretaceous Dinosaur Era, 100 million years ago.
Onchopristis, a formidable giant sawfish from the Upper Cretaceous oceans, is notably abundant in fossil finds from the Sahara Desert. Characterized by its distinctive 2.5-meter-long rostrum adorned with sharp barbs, its name—meaning "Giant Saw"—aptly reflects this remarkable feature. A specialist crustacean predator, Onchopristis used its serrated snout to uncover prey in shallow waters, much like modern sawfish. Fossil evidence suggests that, akin to salmon, schools of Onchopristis migrated into freshwater rivers to reproduce, where juveniles found refuge from predators. However, adult sawfish faced significant risks during these migrations, with Spinosaurus frequently preying on them. Bite marks and embedded barbs in fossils document these interactions, illustrating a complex ecological relationship shaped by survival and predation during this era.
